Yingtianmen is the main south gate of Luoyang City, Gongcheng, Ziwei City, Suitang, commonly known as Wufeng Building. It was built in the first year of the Great Industry (605), the original name was Tianmen, and the first year of the Shenlong (705) was changed to Yingtianmen. Yingtianmen is the court held the throne, the yuan, the amnesty, banquet and other foreign court ceremony venues, Tang Gaozong once released Baiji King Fu Yu Yici, Wu Zetian once ascended the throne here, the function is similar to Beijing lunch gate. It is also a place to receive Japanese envoys, Tang envoys and other countries to come to the dynasty. In 1985, the All-Japan Federation of Cultural Organizations and other organizations established a monument pavilion at Yingtianmen site to "the place where the Japanese envoys and Tang envoys visited the capital", which is a symbol of the country and imperial power. [41][52] Yingtianmen is a huge "concave" shaped building complex integrating the gate building, the flower building and the corridor between the east and west buildings. The east and west are 137 meters long, and the two sides are36.4 meters high, which is 13 floors high today. The door has two views, the title is "purple microscopic"; There are five Chonglou, like five phoenixes, so it is called "five phoenix tower"; there are three doorways downstairs in the city, the middle is the imperial road, left and right; the door is fronted by a two-way three-way, symbolizing the royal majesty, a total of twelve on both sides, is the highest level of the ancient city gate system, the highest courtesy of the heavens. Yingtianmen is the highest-standard city gate in ancient China.[42] Its establishment has a profound impact on the afternoon gates of the Northern Song Dynasty Liang Xuandemen, Yuanda Chongtianmen, and the Ming and Qing Forbidden City. The name is more used by Kyoto Yingtianmen in Japan.[43], known as the "first gate of Sui and Tang Dynasty"[44][51], and it is known as the "first gate of the world"[50], In the Chinese Palace